System and method for optimizing communications between session border controllers and endpoints in a network environment

• US 8,432,896 B2
• Filed: 07/22/2005
• Issued: 04/30/2013
• Est. Priority Date: 07/22/2005
• Status: Active Grant

• Current Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Original Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Inventors: Rosenberg, Jonathan D., Foster, William R.
• Primary Examiner(s): Nawaz, Asad M
• Assistant Examiner(s): HARLEY, JASON A
• Application Number:
  US11/188,166
• Publication Number:
  US 20070019619A1
• Time in Patent Office: 2,839 Days
• Field of Search: 370/352
• US Class Current: 370/352
• CPC Class Codes: H04L 61/00 Network arrangements, protocols or services for addressing or naming
• CPC Class Codes: H04L 61/2564 for a higher-layer protocol, e.g. for session initiation protocol [SIP]
• CPC Class Codes: H04L 61/2578 without involvement of the NAT server

Abstract

An apparatus for optimizing communications between session border controllers in a network environment is provided that includes a session border controller (SBC) operable to communicate with a first endpoint and a second endpoint. The SBC is also operable to communicate with a data path border element (DBE) and a signaling path border element (SBE). The DBE is operable to provide a media relay for a communication session involving the endpoints, the media relay being invoked by either of the endpoints using a traversal using relay network address translation (TURN) protocol, which allows the SBC to operate in either of two modes depending on protocol support present in the endpoints.

Claims

1. An apparatus comprising:

a signaling path border element (SBE) operable to;

receive an INVITE from a first endpoint, the INVITE comprising a preferred local address;

determine, based on the preferred local address, that the first endpoint supports media optimization;

generate a signaling message, the signaling message comprising both;

(a) the preferred local address to allow the first endpoint and a second endpoint to perform the media optimization according to an ICE/TURN/STUN protocol if the second endpoint supports the media optimization; and

(b) optimization information selected to facilitate performing the media optimization independently of the ICE/TURN/STUN protocol if the second endpoint does not support the media optimization;

determine whether the second endpoint supports the media optimization based on a response to the signaling message;

if the first endpoint and the second endpoint support the media optimization, facilitate a data path border element (DBE) to allow the first endpoint and the second endpoint to perform the media optimization according to the ICE/TURN/STUN protocol; and

if the first endpoint or the second endpoint fail to support the media optimization, facilitate insertion of a media relay into the DBE to perform the media optimization for the first endpoint and the second endpoint, the media relay inserted according to the optimization information and independently of the ICE/TURN/STUN protocol.

2. The apparatus of claim 1, the media optimization comprising an interactive connectivity establishment (ICE) protocol media optimization.

3. The apparatus of claim 1, the network address translation server comprising a traversal using relay network (TURN) address translation protocol server.

4. The apparatus of claim 1, the SBE operable to determine whether the first endpoint supports media optimization by:

receiving an INVITE from the first endpoint; and

if the INVITE fails to include a network address translation address, determine that the first endpoint fails to support the media optimization.

5. The apparatus of claim 1, the SBE operable to facilitate insertion of the media relay into the DBE by:

sending realm information to a second SBE operable to decide from the realm information to insert the media relay.

6. The apparatus of claim 1, the SBE operable to facilitate insertion of the media relay into the DBE by:

receiving realm information from a second SBE; and

deciding from the realm information to insert the media relay.

7. The apparatus of claim 1, the network address translation server operable to provide one or more functions selected from:

operating as a network address translation element, providing a virtual private network (VPN) interconnect function, providing address hiding, providing IPV4-IPV6 translation, and executing transcoding.

8. A method comprising:

receiving an INVITE from a first endpoint, the INVITE comprising a preferred local address;

determining, based on the preferred local address, that the first endpoint supports media optimization;

generating a signaling message, the signaling message comprising both;

(a) the preferred local address to allow the first endpoint and a second endpoint to perform the media optimization according to an ICE/TURN/STUN protocol if the second endpoint supports the media optimization; and

(b) optimization information selected to facilitate performing the media optimization independently of the ICE/TURN/STUN protocol if the second endpoint does not support the media optimization;

determining whether the second endpoint supports the media optimization based on a response to the signaling message;

if the first endpoint and the second endpoint support the media optimization, facilitating, by a signaling path border element (SBE), a data path border element (DBE) to allow the first endpoint and the second endpoint to perform the media optimization according to the ICE/TURN/STUN protocol; and

if the first endpoint or the second endpoint fail to support the media optimization, facilitating, by the SBE, insertion of a media relay into the DBE to perform the media optimization for the first endpoint and the second endpoint, the media relay inserted according to the optimization information and independently of the ICE/TURN/STUN protocol.

9. The method of claim 8, the media optimization comprising an interactive connectivity establishment (ICE) protocol media optimization.

10. The method of claim 8, the network address translation server comprising a traversal using relay network (TURN) address translation protocol server.

11. The method of claim 8, the determining whether the first endpoint supports media optimization further comprising:

receiving an INVITE from the first endpoint; and

if the INVITE fails to include a network address translation address, determine that the first endpoint fails to support the media optimization.

12. The method of claim 8, the facilitating insertion of the media relay into the DBE further comprising:

sending realm information to a second SBE operable to decide from the realm information to insert the media relay.

13. The method of claim 8, the facilitating insertion of the media relay into the DBE further comprising:

receiving realm information from a second SBE; and

deciding from the realm information to insert the media relay.

14. The method of claim 8, the network address translation server operable to provide one or more functions selected from:

operating as a network address translation element, providing a virtual private network (VPN) interconnect function, providing address hiding, providing IPV4-IPV6 translation, and executing transcoding.

15. Memory storing computer code, when executed by one or more processors, operable to:

receive an INVITE from a first endpoint, the INVITE comprising a preferred local address;

determine, based on the preferred local address, that the first endpoint supports media optimization;

generate a signaling message comprising both the preferred local address and optimization information, the preferred local address included to allow the first endpoint and a second endpoint to perform the media optimization according to an ICE/TURN/STUN protocol if the second endpoint supports the media optimization, the optimization information selected to facilitate performing the media optimization independently of the ICE/TURN/STUN protocol if the second endpoint does not support the media optimization;

determine whether the second endpoint supports the media optimization based on a response to the signaling message;

if the first endpoint and the second endpoint support the media optimization, facilitate, by a signaling path border element (SBE), a data path border element (DBE) to apply the ICE/TURN/STUN protocol to allow the first endpoint and the second endpoint to perform the media optimization; and

if the first endpoint or the second endpoint fail to support the media optimization, facilitate, by the SBE, insertion of a media relay into the DBE to perform the media optimization for the first endpoint and the second endpoint, the media relay inserted according to the optimization information and independently of the ICE/TURN/STUN protocol.

16. The memory of claim 15, the media optimization comprising an interactive connectivity establishment (ICE) protocol media optimization.

17. The memory of claim 15, the network address translation server comprising a traversal using relay network (TURN) address translation protocol server.

18. The memory of claim 15, the computer code operable to determine whether the first endpoint supports media optimization by:

receiving an INVITE from the first endpoint; and

if the INVITE fails to include a network address translation address, determine that the first endpoint fails to support the media optimization.

19. The memory of claim 15, the computer code operable to facilitate insertion of the media relay into the DBE by:

sending realm information to a second SBE operable to decide from the realm information to insert the media relay.

20. The memory of claim 15, the computer code operable to facilitate insertion of the media relay into the DBE by:

receiving realm information from a second SBE; and

deciding from the realm information to insert the media relay.

21. The memory of claim 15, the network address translation server operable to provide one or more functions selected from:

operating as a network address translation element, providing a virtual private network (VPN) interconnect function, providing address hiding, providing IPV4-IPV6 translation, and executing transcoding.